Hardest Trad Flash Ever | Adam Ondra | Lexicon E11

Memories Transcend Time.
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54 Video Views·Sep 22, 2026
Adam Ondra gives an insight into his mental game while flashing one of the hardest trad climbs in the UK: Lexicon. The route is rated E11, which signifies a route of extreme difficulty and danger, often involving perilous moves and considerable exposure.
Video Summary
AI GeneratedA climber travels to the UK to experience \"trad climbing,\" focusing on the psychological challenge of overcoming fear. The video follows the story of a route called \"Lexicon,\" from its discovery and first ascent by Neil to a subsequent high-stakes flash attempt by Adam, highlighting the thin margin between danger and safety.
Welcome to the UK
Country where lots of climbers embrace this weird style of climbing called Treadclimbing
Using only the natural protection, which is sometimes reasonable
Sometimes very sketchy, sometimes close to each other, sometimes very far
It's an interesting game and in order to fully enjoy it you have to embrace
Overcoming the fear
Climbing on the sport routes, I rarely ever get to experience this fear
But here in UK, I have a route in my mind where I think, you know
The balance between the fear and danger will be just perfect
I first came up to Pavey in 2021 to have a look at the classic route here, Impact Day
And when I was abseiling down the face I just noticed this blank line on the headwall
Which was clearly unclimbed, it was still covered in lichen
And so I got pretty excited, I started brushing off the lichen
And found these little micro-crimps and realised it would go
The thing that was just so obvious about it was the huge runout up the headwall
It's actually twice as big as the runout that you do on Impact Day and that route gets E8
And so it was a matter of, could I do something that was that close to my sport limit with such a big runout
I went halfway up the runout, jumped off, went a little bit further, jumped off
And then I didn't dare go any further, it was a case of when I got to that point
On the lead, I was just going to keep going
Hello!
Hi buddy, how's it going?
What a place!
Enjoy the walk?
Yeah
It's nice, really nice
I first heard about Lexicon just after Neil did it
And from the first picture of it
I thought this would be a really good candidate to have, you know
This perfect balance between danger and fear and margin of safety
I mean, obviously not many people know we're here
And the few people who are close to me who I've said
I'm going to be belaying you on this for a flash and they're like
What?
You're going to be doing what?
The lower section is what we would call an E6 in the UK
Which roughly translates to French 7a climbing, but with quite poor protection
But the climbing isn't physical, there's a few places you can rest
But yeah, the gear is quite bad and quite spaced
But that leads you up to the crack where you place the last gear
And then all the difficult climbing comes above that
There's no crux, it's just sustained on small side pulls, like little crystals
And then you get to the point, like three moves below the top
And this is the point where you have to make the decision
Because at this point, if you don't feel like you've got enough energy to finish it
You have to jump off and that's a huge fall
You don't want to take that fall, but you'd have to take that chance
Rather than carrying on, like thinking that you couldn't do it
And entering a really dangerous situation
From this slope, you stretch up to a really small crimp
It's like four mil, it's tiny
Build your feet, little pocket, and then you throw for this slot
And that move just takes coordination
You have to go slightly sideways and flick it a little bit
And if you were shaky there, you'd just ding the lip of that thing
Yeah, you'd be in the air a long time
Oh my God, oh my God, oh my God
Oh no, I can't ******* believe this
Oh my word, oh what, what, what
And yeah, I ended up making the first ascent
It was undoubtedly the hardest thing I've ever climbed
It's the hardest thing I ever will climb
I'll never do something harder than that
I was always going to relax up to that point and say
Oh, if I fall, it's just a big fall, who cares, it's just a big fall
But relax, relax, relax, get to that point
And then engage a totally different mode
It's like, if I don't feel...
Just like basically overgrip
Overgrip, overgrip, like rinse the tank
And it's like, get to that point
And if I think I get one of those feelings that I can't make it
I have to jump, which is going to be really ******* scary
But better than risking it
Whereas if I do get to that point and I feel OK
It's like, OK, I've got to climb to the top now
And it's a different, it's like survival
You know, you're really, you engage a whole different mindset
For that last, those last two moves
And especially that move to the start
Yeah, what's the hardest physical move?
Like lower down or?
Or it's sort of like pretty homogenous
It's totally sustained
Yeah, that's why it's climbed so well
It's, you know, flowing
You know, it's like doing three Fond 7B boulders
Yeah, yeah
Back to back
And there's no like stopper move, you know
Unless you've got a hold wrong
You know, if you get the holds right
And you get the sequence right
It's a sustained endurance based thing
And so by definition, the last move is the crust
Because that's when you're most fatigued
And also the last move does have a slightly
A slight coordination element to it, you know
I discussed this point of no return with James Pearson
Who made the fourth ascent of the route
And I always thought in my mind like
Yes, if you feel bad, you just jump off
And you are safe
And James insisted that I would not jump down
That no matter how bad you're feeling
You just really want to keep pushing
I think there is a very strong tendency
To just keep pushing no matter how bad you're feeling
I set off to just do a practice go
To try and sort out the gear
And work out what the bottom wall is going to be like
And how it would feel
And I got there
Made a total mess of the gear
But thought it's probably all right
And then I thought I don't feel too bad actually
Now maybe I'll just do a few moves and see what happens
And then I did a few moves
And then you just can't stop
You just go and you go and you go
And suddenly I was totally in the zone
Go on
Will you survive?
He came really close to the ground
He missed the ground by about two meters
At one point he was just coming down towards me
And I actually thought he was going to land on my head
And yet there's still one more move to go after that
So the margins are really tight
Neil rappelled along Lexicon
To start cleaning the holds
Choking them up
And showing me the moves
Just as I was hanging around eight meters to the right
In the neighbouring route
So I could get a better view of it
For the ethical reasons
It was really important for me that I'm far enough from the route
When Neil is showing me the moves and holds
This is the point where you place your last bits of gear
Before the run out
And what you've got is a smallish cam on the left here
Your main point is this one
Which is a little yellow cam goes in there
Okay
Now obviously that's quite a small piece of gear
So what you want to do is
You back it up with a bigger one which is over on the side
But the thing is that has to be extended
Otherwise you'd get too much drag
So you basically cluster these three pieces together
And that's it
You don't want to go too far past it
But there's a little bit of...
Alright
And it's three, yeah?
It's front three
And then you're stepping up
You're into this
Big foot
And then the top's like a bucket
Yeah
Alright
Let's do it
Psyched!
It's quite different
Normally when I go for a flash
I sort of knew I have to go all in
There is definitely this element of danger
And being conscious about this last hard move
Where it would be nice not to fall
As Neil said, up to the last move
I think it will feel the same as going up on a sport climb
Hopefully I will not mess up
Putting this cluster of gear at the break
That's maybe the thing that I'm most worried about
But on the other hand, the break looks good enough
So even if I make a slight mistake and I need to readjust it
It shouldn't cost too much energy
And then the climbing looks...
Looks hopefully also that the beta will fit my style
I think the only doubt is
Is actually the last hard move
There are more foot options
And I think that's the only part
Where I kind of follow my intuition
You can have those on the right
Go and place these first
Because they are the good ones
Yeah
These are the good ones
And again do that one
Like that
So maybe have those on the right
And the other two on the left
Yeah
Suddenly there was just this moment of calm
Before Adam went for it
And there has to be that moment of calm
Everybody just needs to chill down
And then it dawns on you what's about to happen
And you see this guy at the bottom
And he's racking up his gear
And you think he's got to go up that
And there's no top rope
He hasn't top roped it first
He's got to lead up that
And it's the 11
And nobody's done that before
Like you don't have any reference points
You don't have anything to compare it to
Like no human being's ever done this
And that was weird
You know, and you're kind of
Trying to keep the mood light hearted
A little bit of a joke
But not too
Yeah, knowing what to say to each other
And like when you make eye contact
Before the route
It's a really strange feeling
And I think it was the best bit
Was when you just started climbing
Some jugs at the top
But there is a sloper on the left if it helps you
But it's a bit slopey where the chalk is
And you can place the RP there
But you might just want to keep going, Adam
I think just keep going
So the red can with the sling
Yeah, nice Adam
Yeah, cool
The small red one all the way to the bottom
You got it, all the way to the back on the left
Yeah, good work Adam
You're on the gui gui
I was scared
I mean, it didn't feel as solid as I was hoping
I'll be absolutely honest
Having climbed the route
One of the first things I thought about
That night when I went home
Was that someone could flash it
And that that would represent the future
And at some point that would happen
And it might actually happen quite soon
And of course I thought of him
Because I know him and I've climbed with him
And I know how he walked up these routes on the grit
In the sun, like on sighting E7s
Like he was out walking his dog, you know
And so yeah, he was such an obvious candidate
But he's a busy guy
He's getting pulled in all different directions
You know, come here Adam, try this route
You know, with his family and everything else
It's like, would he come?
And I'm obviously never going to say
Come and try my route
But I'm kind of suspecting that maybe one day
I'm going to get that message
And then sure enough the message appeared on my phone
And it was like, right then, here we go
I'm a kind of person that definitely enjoys
Being scared at least a bit
It is addictive, at least in climbing for me
But you always need to be aware of the danger
And I got it right here
But you know, maybe I was just lucky
And it's hard to tell how much I want to do
Some objectively dangerous routes in the future
But in this case, it was definitely worth it
